flap

flap 1
 noun
1    [C] a flat piece of material, that is fastened by one edge to a surface and hangs down loosely over something
2    be/get in a flap informal to be very excited and worried about something:
?She's in a bit of a flap over moving house.

flap 2
verb -pped, -pping
1    [T] if a bird flaps its wings, it moves them up and down
2    [I] if a piece of cloth, paper etc flaps, it moves around quickly and makes a noise:
?The ship's sails flapped in the wind.
3    [I] BrE informal to behave in an anxious and excited way:
?There's no need to flap.